You can manage
uplink adapters, which represent the physical NICs that connect the
ESXi host to
the network by using the
esxcli network
nic or the
vicfg-nics
command. You can also use
esxcli network
vswitch and
esxcfg-vswitch to link
and unlink the uplink.

You can use
vicfg-nics to list
information and to specify speed and duplex setting for the uplink.

You can use
esxcli network
nic to list all uplinks, to list information, to set attributes, and
to bring a specified uplink down or up.